Mammoth Cave to San Diego: Road Trip Guide & Distance

1777.7 miles 2861 km · straight line
2114.6 miles actual route 3403.1 km · driving distance
36h 39min estimated drive time
$204 - $250 estimated fuel cost
~4h 5min flight time
269° W bearing direction

How far is Mammoth Cave from San Diego?

The distance from Mammoth Cave to San Diego is 1777.7 miles (2861 km) as the crow flies. San Diego is located W of Mammoth Cave. By car, the driving distance is approximately 2114.6 miles, taking about 36h 39min. A direct flight would take roughly 4h 5min. Both are located in United States — Mammoth Cave in Kentucky and San Diego in California.

This is a serious multi-day road trip! We strongly recommend breaking this journey up with an overnight stay to ensure you arrive safely and refreshed. Since you'll be heading mostly West, pack a good pair of sunglasses if you plan to drive during the late afternoon to avoid the harsh sun glare. For a trip of this distance, flying is significantly faster. However, driving offers the flexibility to explore stops along the way.

Coordinates come from public place data for Mammoth Cave and San Diego. The driving distance uses an OSRM road-route result when route data is available. Fuel, flight, bus, and train values are planning estimates and can change by date, provider, road closures, and border rules.

How to Get from Mammoth Cave to San Diego

Method Time Est. Cost Best For
Drive 36h 39min $204 - $250 Flexible stops
Fly ~4h 5min $80–200* Speed
Bus ~43h 59min $169–$317* Budget
Train ~47h 39min $254–$740* Comfort

Suggested Stops Between Mammoth Cave & San Diego

Quick Facts

Mammoth Cave
37.19°N, 86.10°W
America/New_York
210m elevation
San Diego
32.72°N, 117.16°W
America/Los_Angeles
20m elevation
Explore more routes from San Diego

Did You Know?

  • At walking speed (3 mph), it would take about 593 hours of non-stop walking
  • By bicycle at 12 mph, the journey would take roughly 148 hours
  • You could travel this distance about 14 times to circle the Earth's equator
Data Sources & Estimate Notes GeoNames · OpenStreetMap · OSRM